2,409 open source boards in Dev boards & breakouts
Development boards, breakouts, shields, HATs and carrier boards. Every board here is a public GitHub project with its KiCad files, read for size, layers and parts. Pick one close to your design and simulate its firmware on HardLabs before you build it.
AVR/ArduinoNanoReflowController
hecko
100 × 60 mm31 parts2LNo license0
Probable chemical burns
Gripsou
140 × 85 mm31 parts2LCERN-OHL-P-2.00
STM32Stmdevboard
asadpetwalker
36.2 × 38.1 mm31 parts2LMIT0
STM32Stm8Project
afbravo
48 × 18 mm31 parts2LNo license0
STM32Stm8l151k6t6 board
48 × 18 mm31 parts2LNo license0
STM32Klyr f072
dialgorithm
65 × 30 mm31 parts2LNo license0
ESP32-Stepper-Motor-Breakout-Board
KevinCKHo
85 × 110 mm31 parts2LNo license0
ESP32STM32-ESP32-Breakout-Board
Nothingbutthebest1209
50 × 50 mm31 parts4LBSD-3-Clause0
MicroDev128-32P
ILikeBWRs
49.1 × 17.8 mm31 parts4LGPL-3.00
Pikvm zimacube hat
geleynse
65 × 56 mm30 parts2LNo license0
AVR/ArduinoVdo breakout
nagutierrez
47 × 48 mm30 parts4LCC-BY-NC-4.00
RP2040/RP2350Custom-RP2040-Dev-Board
PartialScience
53.3 × 53.3 mm30 parts2LMIT0
STM32Nicklink
NickStassen
34 × 33 mm30 parts2LMIT0
Microchip SAMSamd21-pmod
joshajohnson
40.6 × 40 mm29 parts2LCERN-OHL-S-2.00
Breadboard io
everyday-dev
33 × 19.1 mm29 parts2LCC-BY-SA-4.00
Breadboard Power Supply
Evan6678
44.4 × 51 mm29 parts2LNo license0
ESP32ESP32-S3-Mini-Development-Board
Rakesh-Bhandari
28.6 × 38 mm29 parts4LNo license0
ESP32Esp32-c3-wroom02-development board
Srushti-D-Hebbar
30.6 × 35.8 mm29 parts4LMIT0
TI-MSPM0
marwantm
60 × 34 mm29 parts2LNo license0
STM32Linky
devisunofficial
38.5 × 41 mm29 parts2LNo license0
Portable-Arduino-UNO-Shield
DariusSasarman
91.6 × 53.3 mm29 parts2LNo license0
MSPM0-USB-Development-Board
bassammorsy
53 × 28 mm29 parts2LNo license0
STM32STM32-Development-Board
harshitha-purama
44 × 41.5 mm28 parts2LNo license0
STM32MCU Dev Board
maumana25
58.5 × 46.5 mm28 parts2LMIT0
ESP32ESP32-BOBOARD-5V
gianlucarenzi
100 × 60 mm28 parts4LGPL-3.00
STM32Stm32f103-dev board
ajmalpro11
42 × 35.5 mm28 parts2LMIT0
STM32Stm32-dev board
FerretCode
42 × 32 mm28 parts4LNo license0
AVB-Eurorack
scrambletools
84.7 × 30 mm28 parts2LNo license0
STM32Custom stm32
Annusingh002
39.7 × 24.5 mm28 parts2LNo license0
Igloo64 Prototyping Board
anachrocomputer
96.5 × 90.2 mm28 parts2LNo license0
Audio breakout
pui4
21.4 × 34 mm28 parts2LNo license0
Suzibot
coddingtonbear
74.5 × 51.6 mm27 partsNo license0
AVR/ArduinoOctoboard
hhhug000
45 × 74.5 mm27 parts2LApache-2.00
STM32Stm32f103-usb devboard
Waqar-98
36.3 × 38.2 mm27 parts2LMIT0
Tda2050-dev
gmazzucchi
81.3 × 80.6 mm27 parts2LNo license0
STM32Fmc memory adapter
FlorianFrank
200.1 × 170.2 mm27 parts4LApache-2.00
Browse boards by part
AMS1117-3.3 1176USBLC6-2SC6 971RP2040 698W25Q128JVS 419AP2112K-3.3 372TL072 338TL074 307ESP32-S3-WROOM-1 300CH340C 273L7805 264Pico 25074HC595 248USBLC6-2P6 235LM358 223AP2112K-3.3TRG1 202Arduino_Nano_v3.x 19474LS04 193LM7805_TO220 182ESP32-WROOM-32 18174LS245 171SRV05-4 169W25Q128JVSIQ 16974LS138 16274LS32 161